CN214304376U

CN214304376U - Automatic flushing structure for mechanical seal of double-suction pump

Info

Publication number: CN214304376U
Application number: CN202023206223.3U
Authority: CN
Inventors: 朱艳萍
Original assignee: Shanghai Kaiquan Pump Group Co Ltd
Current assignee: Shanghai Kaiquan Pump Group Co Ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-09-28
Anticipated expiration: 2030-12-26

Abstract

The utility model relates to a double entry pump machine seals automatic washing structure installs in the double entry pump, including sealed flushing hole, sealed flushing hole is located the pump cover, and sealed flushing hole is including controlling two, and sealed flushing hole is drawn forth from pump cover upper end both ends respectively, passes the suction chamber baffle, and the both ends of drawing forth are connected to the machine that pump cover and axle between seal the chamber of washing. The utility model discloses drill on the pump cover in the design process, this hole is directly to the mechanical seal and moves quiet ring junction, and for the convenience of processing, this hole can with the off-axis arbitrary angle, but must guarantee that the pore pair moves quiet ring junction. The size of the aperture is determined by the size of the mechanical seal of the designed pump. Through the high pressure characteristic of liquid in the pump chamber, carry out automatic washing and lubrication to the machine seal through drilling, this structure processing is convenient, compact structure, reduction in production cost. The utility model discloses do not destroy pump cover bulk strength, do not adopt the external pipeline that increases the occupation space of equipment, the whole of pump is pleasing to the eye.

Description

Automatic flushing structure for mechanical seal of double-suction pump

Technical Field

The utility model relates to an automatic flushing structure, concretely relates to processing is convenient, compact structure, reduction in production cost, do not destroy pump cover bulk strength, do not adopt occupation space's external pipeline's double entry pump machine to seal automatic flushing structure.

Background

Fig. 2 is a schematic view of a conventional automatic flushing structure of a double-suction pump mechanical seal. As shown in fig. 2: the common automatic flushing structure of the double-suction pump mechanical seal comprises a sealing flushing part, wherein the sealing flushing part comprises a sealing flushing pipeline and a sealing flushing pipeline accessory matched with the sealing flushing pipeline; the sealing flushing pipeline is led out from two ends of the pump cover, and the two led-out ends are connected to the machine sealing gland flushing hole or the reserved filler flushing hole of the pump cover.

It can be seen from among figure 2 that the structure of washing of double entry pump machine seal is mostly the mode that adopts external pipeline to wash and lubricate the machine seal, and the welding of punching to the pump cover is adopted in the connection of this pipeline, destroys pump cover bulk strength, and the welding of pipeline produces the water spot of leaking easily, and external pipeline adopts elbow and straight tube to connect more, increases the leakage possibility, and external pipeline increases the occupation space of equipment, increases man-hour and cost, influences the whole pleasing to the eye of pump. When the double-suction pump is used for conveying high-temperature, high-pressure and high-concentration liquid, the external pipeline is easy to block, the possibility of pipe explosion is caused, certain safety accidents are caused, and the external pipeline cannot well wash and lubricate the mechanical seal under the working condition. Wherein in fig. 2: the pump comprises a mechanical seal gland 1 ', a mechanical seal 2 ', a pump cover 3 ', an impeller 4 ', a shaft 5 ', a pump body 6 ', an outer washing pipeline 7 ', a water suction chamber partition plate 8 ' on the pump cover and a joint position 9 ' of a movable ring and a static ring.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a dual suction pump mechanical seal automatic flushing structure, which is convenient to process, compact in structure, and can reduce the production cost without damaging the overall strength of the pump cover and without adopting the external pipeline occupying space.

The utility model discloses a solve above-mentioned technical problem through following technical scheme: the utility model provides a double entry pump machine seals automatic flushing structure, double entry pump machine seals automatic flushing structure installs in the double entry pump, double entry pump machine seals automatic flushing structure includes:

the sealing flushing holes are positioned in the pump cover and comprise a left sealing flushing hole and a right sealing flushing hole, the sealing flushing holes are respectively led out from two ends of the upper end of the pump cover and penetrate through the partition plate of the water suction chamber, and two led-out ends are connected to the mechanical sealing flushing cavity between the pump cover and the shaft.

In the specific embodiment of the present invention, the holes at the two ends are aligned with the joint of the moving ring and the stationary ring; the dynamic and static rings are positioned at the joint of the mechanical seal cover, the pump cover and the shaft.

In a specific embodiment of the present invention, the diameter of the sealing flushing hole is in the range of 6-10 mm.

The utility model discloses an actively advance the effect and lie in: the utility model provides a double entry pump machine seals automatic washing structure has following advantage: the utility model discloses drill on the pump cover in the design process, this hole is directly to the mechanical seal and moves quiet ring junction, and for the convenience of processing, this hole can with the off-axis arbitrary angle, but must guarantee that the pore pair moves quiet ring junction. The size of the bore is determined by the size of the mechanical seal of the pump being designed, and in typical designs the diameter of the bore is kept at a minimum at 6 mm. Through the high pressure characteristic of liquid in the pump chamber, carry out automatic washing and lubrication to the machine seal through drilling, this structure processing is convenient, compact structure, reduction in production cost. The utility model discloses do not destroy pump cover bulk strength, do not adopt the external pipeline that increases the occupation space of equipment, the whole of pump is pleasing to the eye.

Drawings

Fig. 1-1 is a schematic view of the automatic flushing structure of the double suction pump mechanical seal of the present invention.

Fig. 1-2 is a partial enlarged view of fig. 1-1.

Fig. 2 is a schematic view of a conventional automatic flushing structure of a double-suction pump mechanical seal.

The utility model discloses the name that well reference numeral corresponds:

in FIGS. 1-1 and 1-2:

mechanical seal gland 1, mechanical seal 2, pump cover 3, impeller 4, shaft 5, pump body 6, seal flushing hole 7, pump cover upper water suction chamber partition plate 8, dynamic and static ring joint 9

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

It can be seen from among figure 2 that the structure of washing of double entry pump machine seal is mostly the mode that adopts external pipeline to wash and lubricate the machine seal, and the welding of punching to the pump cover is adopted in the connection of this pipeline, destroys pump cover bulk strength, and the welding of pipeline produces the water spot of leaking easily, and external pipeline adopts elbow and straight tube to connect more, increases the leakage possibility, and external pipeline increases the occupation space of equipment, increases man-hour and cost, influences the whole pleasing to the eye of pump. Double suction pump is when carrying high temperature, high pressure, high concentration liquid, and external pipeline produces the jam easily, and the possibility of tube explosion appears, causes certain incident, and external pipeline can't wash and lubricate the machine seal betterly under this operating condition, the utility model discloses the shortcoming of external pipeline has been filled, can adopt this mode to lubricate and wash the machine seal under this operating condition.

Fig. 1-1 is a schematic view of the automatic flushing structure of the double suction pump mechanical seal of the present invention. Fig. 1-2 is a partial enlarged view of fig. 1-1. As shown in the above figures: the utility model provides an automatic flushing structure of double entry pump machine seal, this automatic flushing structure of double entry pump machine seal is installed in the double entry pump, and this automatic flushing structure of double entry pump machine seal includes: and the sealing flushing holes 7 are positioned in the pump cover 3 and comprise a left sealing flushing hole and a right sealing flushing hole, the sealing flushing holes are respectively led out from two ends of the upper end of the pump cover and penetrate through the partition plate of the water suction chamber, two led-out ends are connected to a mechanical sealing flushing cavity between the pump cover and the shaft 5, and holes at two led-out ends are aligned to a movable and static ring joint 9. The dynamic and static rings are positioned at the joint of the mechanical seal cover 1, the pump cover 3 and the shaft 5.

In the specific implementation process of the utility model, the diameter range of the sealing flushing hole is 6-10 mm.

The utility model discloses drill on the pump cover, lubricate and wash machine seal through the high-pressure liquid in the pump chamber, this structure can not cause destruction to the pump cover, and the production of leakage is prevented to the better circulating water of utilizing simultaneously. This novel from washing structure is decided according to the diameter size that the machine sealed, usually at least sets up diameter 6mm through-hole in the design process, and direct washing machine seals and moves quiet ring handing-over department, and this structure is drilled in the pump chamber and is accomplished, can not produce because the leakage causes the incident. The structure is simpler and more efficient in processing and manufacturing, compact in structure and lower in comprehensive cost.

The utility model discloses drill on the pump cover in the design process, this hole is directly to the mechanical seal and moves quiet ring junction, and for the convenience of processing, this hole can with the off-axis arbitrary angle, but must guarantee that the pore pair moves quiet ring junction. The size of the bore is determined by the size of the mechanical seal of the pump being designed, and in typical designs the diameter of the bore is kept at a minimum at 6 mm. The mechanical seal is automatically flushed and lubricated by drilling due to the high pressure characteristics of the liquid in the pump chamber.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a double entry pump machine seals automatic washing structure which characterized in that: the automatic structure of washing of double entry pump machine seal is installed in the double entry pump, the automatic structure of washing of double entry pump machine seal includes:

2. The double suction pump mechanical seal automatic flushing structure of claim 1, wherein: the holes at the two ends of the leading-out part are aligned with the joint of the movable ring and the static ring; the dynamic and static rings are positioned at the joint of the mechanical seal cover, the pump cover and the shaft.

3. The double suction pump mechanical seal automatic flushing structure of claim 1, wherein: the diameter of the sealing flushing hole ranges from 6mm to 10 mm.